Hexidecimal I have hooked up my router and installed my new wireless card, both say connected and exellent signal, but I cannot get online. Under info. it says the hexidecimal key entered may be wrong, how and where do I find this out...?

You can check for the hexidecimal key under the encryption settings on both your wireless router and your computer's wireless card. It is important to note that the encryption type and hexidecimal key must be EXACT. You may want to test wireless connectivity first with no encryption in place on both ends. Then, once you have confirmed wireless connectivity, turn on ecryption on both the wireless router and wireless card.

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You can check your connection if everything is properly connected.,
MOdem should be on the INTERNET port, The computer should be on the LAN port.
Sometimes wireless security is also causing the problem.
You can check your security by goin to the wired computer.
Open a browser and type in the address bar 192.168.1.1,
No username password is admin.
Click on wireless tab and then click on the wireless security.
Check these settings and then go back to your laptop disconnect and then reconnect again.

There are a few things that can cause you to lose wireless connection with your wireless router.1. Weak signal strength, check the signal strength on your wireless card. If it is weak move the wireless router away from walls and if possible locate the wireless router higher up.2. Have you secured your wireless router from people near your from unauthorized access? Ie. change the default password, setup encryption use WPA2 or WPA, change the default SSID, and turn off SSID broadcast, and for added protection, enable MAC address filtering which allows only the MAC address/es of your wireless card/s to connect to your wireless router.3. You could be getting interference from electrical sources such as air conditioners, arid welders, washing machines etc. If so the power supply to the wireless routers and computers etc should be connected to a surge protection power board, better still connect your computer equipment to an UPS (Uninterrupted Power Supply) 4. Check the channels of the wireless routers and access points in your area and change the broadcast channel on your wireless router to an unused channel or one that has the weakest signal strength. This will minimize interference with your wireless router from other wireless routers and access points in your area.

The lag could be because of a latency between your router and the gaming servers you are connecting to. Not a whole lot you can do about that.
FYI, signal strength of 65-75% isn't bad at all and shouldn't have a significant impact on your wireless performance. Keep in mind that your internet connection is usually the bottleneck for performance. If your wireless runs at 54Mbps with 100% signal strength, when you lose signal, it reduces the performance of your wireless. For example, if you were to get to 40% signal strength, your performance could be reduced to only 11Mbps. While that is a drastic drop for your local LAN performance, 11Mbps is still faster than the vast majority of internet providers currently have, so your in-game performance shouldn't change, based on less signal strength or less bandwidth.
As for your "N" router, if you have a 5Ghz or 2.4Ghz cordless phone in the location where you installed the router, there is a chance that it is conflicting with that frequency. Since you don't have that problem on your "G" router, I can only deduce that if this is the problem, you have a 5Ghz phone, since "G" operates only at 2.4Ghz. If you still have the "N" router, disconnect the phone, re-install the "N" router and see if that fixes your problem. If it does, then you may want to either stick to the "G" router anyway or upgrade your phone to the newer "wireless friendly" 6Ghz phones.

Are you trying to hook up the laptop wirelessly to the pc? because then the pc would need to have a wireless card as well....sounds like I need more info, but if you are trying to do what I think you are, you should just get a wireless router instead, hook the pc tower directly to it via ethernet cable, and then setup the laptop to connect to the router. The router would hook to your dsl or cable router....what service do you have?

Have you tried to see if there is a better signal in different areas ? If so you may need to get something to boost the signal. Either a stand alone booster or a different card for the computer. Is it possible the battery is losing capacity to hold a charge, if the computer in question is a laptop?

There is a possibility that the wireless settings are not similar for the wireless adapter and the router. You can check the wireless settings of the router from its setup page.

1) Connect a computer to the router using a wire
2) Open an Internet browser and access 192.168.1.1 (or if you changed it, use the IP you have set)
3) If it asks for Username and password, defaults are admin for User name, password for Password
4) find the wireless portion and take note of the SSID, channel, Security type and the password
5) Once you have all that, set the wireless settings on your g card.

There are some g cards that has their own wireless utility. If that is the case, you need to open the utility for the G card and set the wireless settings there.

If that does not work, you can try removing all the preferred network and reconnect. If a wireless security key is needed, you have to correctly enter that to fix this problem.

Do U see the router signal on the wireless network connection search?
Sometimes the linksys systems cd does not want to work on some pc's. try using the control panel - add/remove programs and uninstall all programs for the linksys. Then goto the control panel - system - hardware and uninstall the linksys card. Leave the actual card installed and reboot. After it detects your card use the linksys cd to load only the driver.
In the properties of the wireless connection, let windows manage it.
The above is based upon the factory defaults of the router. Any keys to access the router would have to be used on the pc.

All right, according to your question, i'll asssume your pc running with win xp..first connect the wireless card to the computer and restart it, the card should be detected, you should get a found new hardware screen then insert the cd and continue installation..if you do not get the screen check in a diff pc if you stillk do not get the message.. the problem is with the pc card or else with the pc where you are trying to install the card/..